已知向量a={2,2,2},b={1,2,4),两向量相乘,为什么结果等于{4,-6,2}是如何得出这个结果的,过程写明.
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![已知向量a={2,2,2},b={1,2,4),两向量相乘,为什么结果等于{4,-6,2}是如何得出这个结果的,过程写明.](/uploads/image/z/1581081-33-1.jpg?t=%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fa%3D%7B2%2C2%2C2%7D%2Cb%3D%7B1%2C2%2C4%29%2C%E4%B8%A4%E5%90%91%E9%87%8F%E7%9B%B8%E4%B9%98%2C%E4%B8%BA%E4%BB%80%E4%B9%88%E7%BB%93%E6%9E%9C%E7%AD%89%E4%BA%8E%7B4%2C-6%2C2%7D%E6%98%AF%E5%A6%82%E4%BD%95%E5%BE%97%E5%87%BA%E8%BF%99%E4%B8%AA%E7%BB%93%E6%9E%9C%E7%9A%84%2C%E8%BF%87%E7%A8%8B%E5%86%99%E6%98%8E.)
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